Philips 26HFL3350D/10 Service Manual page 36

EN 36 5. Q522.2HE LA
5.9.5 Display option code
Caution: In case the SSB has been replaced, always check
the display option code in SAM, even if a picture is shown. With
a wrong display option code it is possible that a picture is
shown, but that in certain conditions unwanted side-effects
could occur.
5.9.6 Upgrade EDID NVM
To upgrade the EDID NVM pin 7 of the EDID NVM must be
short circuited to ground. Therefore some test points (EDID1,
EDID2 and EDID3) are foreseen next to the HDMI connectors
(see figure EDID-NVM
instructions.
5.10 Software Upgrading
5.10.1 Introduction
The set software and security keys are stored in a NAND-
Flash, which is connected to the PNX85xx via the PCI bus.
It is possible for the user to upgrade the main software via the
USB port. This allows replacement of a software image in a
stand alone set, without the need of an E-JTAG debugger. A
description on how to upgrade the main software can be found
in the DFU.
Important: When the NAND-Flash must be replaced, a new
SSB must be ordered, due to the presence of the security
keys!!! (copy protection keys, MAC address, ...).
Perform the following actions after SSB replacement:
1. Set the correct option codes (see sticker inside the TV).
2. Update the TV software (see the DFU for instructions).
3. Perform the alignments as described in chapter 8 (section
"Reset of Repaired SSB").
4. Check in CSM if the HDMI keys are valid.
5.10.2 Main Software Upgrade
The software image resides in the NAND-Flash, and is
formatted in the following way (refer to table
content):
Table 5-2 NAND flash content
NAND Flash content
Partition
JFFS2 partition 1 (application read write data)
JFFS2 partition 0 (Application read only once data)
JFFS2 partition 0 (Application read only upgradeable
data)
SQUASHFS partition
BFFS partition 2 (DVD OK)
BFFS partition 1 (DVD cursor down)
BFFS partition 0
Block 0
• The above overview of the NAND Flash shows the content
of the different partitions. It also shows which part of the
one-zip file erases and programs which part of the NAND
Flash.
• Remark: the above does not mean that the HDMI keys can
be reprogrammed with the "UpgradeAll.upg" file from the
2010-Jun-30
Service Modes, Error Codes, and Fault Finding
pins). See section ComPair for further
NAND flash
Content
Channel table, EPG data,...
HDMI keys, back up display file, ...
wizard pictures, display file, cabinet file, upgrade assistant, ...
Main software (Mips), Linux structure (root file system)
Default software upgrade application TriMedia software boot
batch file 2
Back up software upgrade application boot batch file 1 Linux
kernel JETT: needed for ComPair
Jaguar Boot loader boot batch file 0
mBTM partition table
EDID 3 EDID 2
Figure 5-16 EDID-NVM pins
One ZIP
Fuse UPG Upgrade all UPG
Erase Program Erase
X X
X
X X
X X X
X X X
X
one zip file. This can only be done in a secure environment
(e.g. the factory).
• The "UpgradeAll.upg" file is only used in the factory.
• The "FlashUtils.upg" file is only used by service centra
which are allowed to do component level repair on the
SSB.
EDID 1
H_17650_089.eps
160108
Flash Utils UPG
Program Erase Program
X
X
X
X
X
X X X
X X
X